In an effort to bring local channels to another 41 local areas in the US, DirecTV has launched another satellite, this time using the Sea Launch sea-borne commercial launch facility.

Sea Launch uses a sea-borne launch facility usually position near the equator in the Pacific Ocean to launch commercial payloads. Vehicles are assembled in Long Beach, CA and enroute on their mobile Assembly and Command ship.

If you're at all interested in this kind of stuff, you should check out their site which has a lot of technical information and some nice pictures.